Oil burner



*Feb.22,1938.' EJMCCULLQUGH y 2,109,027

OIL BURNER Filed March 25, 1937 gg INVENTR` fdua/dd/Wra//aaqh ATTORNEY.

Patented Feb. 22,. 1938 UNITED STATES PAT'EN'r ortica* 1 claim.

The purpose oi the invention is to provide a mixing well or ball adjacent the nozzle of an oil burner for thoroughly breaking up the air before it passes over the nozzle in order to obtain more 5 thorough mixing and more eiiicient burning.

in the form of venes to deiiect the air, howeven,

it has been found desirable to provide means adjacent the nozzle whereby the airpasses through a churning chamber in which the, vchamber' is shaped to circulate the air through a sphere and then discharge the air through the incoming air..

The object oi the invention is, therefore, to provide means adjacent the nozzle of an oil burner for thoroughly. breaking up and :ce-mixing the air before it passes around the nozzle.

Another object is to provide means for thoroughly breaking up air passing through an. oil burner without moving parts or deecting varies.

Another object is, to provide means for thoroughly breaking up or atomizing air without obstructing the area of the passage through which the air passes.

A further object is to provide means for thor-=` oughly breaking'up air in which the breaking up action is obtained by the shape of the inner surface oa chamber adjacent the nozzle.

With these ends in View the invention embodies a passage connected with the exhaust oi a ian, a spherical chamber positioned at one side of the passage and adapted to receive air irom the passage, and an. outlet lconnection extending from the spherical chamber and in which the nozzle and electrodes arepositioned.

Other features and advantages of the invention will appear from the following description,-

taken in. connection with the drawing, wherein:

Figure 1 is a View showing a side elevation of the complete burner.

Figure 2 iS a cross section through the part oi the casing showing the spherical chamber with arrows indicating the path of air passing therethrough.

55 Figure 3 is a pian view o! the burner.

Figure 4 is a cross section-on line Q-H of Figure 2.

Figure 5 is a detail showing a section through a portion of the air inlet valve.

In the drawing the burner is shown as it may be made, numeral i indicating the spherical mixing chamber, numeral 2 the nozzle and numeral 3 the electrodes.

The chamber i is of a spherical shape and is made integral with a tubular outlet passage and a supply tube 5e connected into one side of the chamber i through an opening t. It will. be noted that air passing forward through the tube 5 will be directed downward by the curved surface l atv the end thereof, and the air will then pass into the chamber i and the spherical surface of the wall thereof will direct the air around in a spherical motion so that it Will pass back through the incoming air and thenpass out through the passage Q, and through the opening i? around the nozzle,l with the vinner surfaces ii oi the passage d directing the air inward toward the center where it will again inter` mingle at a theoretical point id. At thevback of the chamber i is an opening ii covered with a cover plated? having screws i3 holding it in piace as shown in Figure 1, and at the back of the cover plate is a boss it through which the fuel isl connected to the ,nozzle 2 through an internal pipe i5 and another pipe i6 which extends to an oil pump i'. It will be understood, however. that this connection may be formed in any other manner. The inner end of the pipe i5 is mounted in a spider or-stand i8 and the upper part of the stand is formed with extensions i9 and 2@ in which the electrodes 3 are also held. The connections 2i and 22 from the electrodes pass backward through a porcelain bushing 23, that .may be held in. a socket 26, as shown in Figure 2, and the socket may be held by a screw extending through the casing. The elec-v trode connections pass outward through the wall of the casing and into a transformer 36 at one side oi" the casing.

In the. design shown the opposite end of the supply tube d extends backward and the end- 0D- posite the nozzle `forms a fan chamber 2l which is mounted upon a stand 28 and a motor 2l is also mounted on'this stand andidirectly connected to a fan or .turbine in the housing 21, and also to thev fuel pump I1. It will be understood, however, that the arrangement of the motor pump and transformer is immaterial as the ian or turbine, which may also be oi' any type or design, and the pump, may be operated in any manner or by any means.

'I'he volume of air passing into the device may` be controlled by a valve formed of stationary ribs I0 and movable plates 3l positioned at one side of the housing 21 and these may be adjusted by lugs 32 and 33 in order to admit any amount of air desired. The plates 3l are held by screws 34 and 35 in slots 315v and 31, and it will be noted that they may be moved around the center to obtain any opening between the members 30 that may be desired. It will also be understood that this is only a typical arrangement of the valve, as any other means may be provided for controlling the amount of air admitted.

It will be understood that other changes may .be made without departing from the spirit of the chamber and still another may be in` the use of other means for supplying air and fuel to said chamber and device.

'I'he construction will be readily understood from the foregoing description. In use this device may be' provided as shown and described, and although the supply tube 5 may be positioned at any angle, it is preferred to locate this tube directlyabove the spherical chamber I sothat the air passes directly downward into the interior thereof, and it will be noted that with .air supplied under pressure it will circulate around the wall and, as hereinbefore stated, passback through the incoming air so that a very thorough mixing and breaking up of the air is obtained.

This mixing action is accentuated by the fact that the chamber is spherical, or curved in all directions as the air downward at the sides and at every point, also is churned around a sphere, as well as the air indicated by the arrows at the front, thereby increasing agitation and ,producing more thorough mixing or breaking up there-oi.

Having thus fully described the invention, what I claim as new and desire to secure by Let#- ters Patent, is: l

In an oil burner o! the type having a horizontally positioned nozzle at the end of an air tube, one end of which is connected to a blower for supplying airl under pressure, and the opposite end of which extends to a point adjacent the tire.

and in which the nozzle is. positioned, and also in which said air tube is oiset providing two sections the axes of which are parallel, and with the axis of the section connected to the blower above the axis of the section in which the nozzle is located; a ball-shaped casingpositioned at the rear of the section in which the nozzle is located provided with an opening communicating with said section, and also provided with an opening in the upper side thereof communicating with the upper air supply tube section, the wall oi' said upper section of the said air tube terminating at a point corresponding with and tangent to the periphery of the said ball-shaped Vcasing on the side adjacent the nozzle, and

shaped to direct air currents passing through said casing downward at the front and sides of said ball-shaped casing, and then outward through the section in which the nozzle is placed, the air passing around the inner surface of the said ball-shaped casing, and passingl through the current of air passing downward therein and across the rst named opening from the section of said air tube.

EDWARD J. McCUlLOUGI-l. 

